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<div class="title">Vector4.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">// =========================================================================================</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">// KXG363 - Advanced Games Programming, 2012</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">// =========================================================================================</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">// Author: Robert Ollington</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">// vector4.h</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// 3d homogeneous vector class</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// Adapted from Ogre3D</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#ifndef VECTOR4_H</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define VECTOR4_H</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;algorithm&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;assert.h&gt;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &quot;Vector3.h&quot;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">namespace </span>T3D</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;{</div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="class_t3_d_1_1_vector4.html">   24</a></span>&#160;    <span class="keyword">class </span><a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    {</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;        <span class="keywordtype">float</span> x, y, z, w;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;        <span class="keyword">inline</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>()</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;        {</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;        }</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;        <span class="keyword">inline</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>( <span class="keyword">const</span> <span class="keywordtype">float</span> x, <span class="keyword">const</span> <span class="keywordtype">float</span> y, <span class="keyword">const</span> <span class="keywordtype">float</span> z, <span class="keyword">const</span> <span class="keywordtype">float</span> w )</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;            : x( x ), y( y ), z( z ), w( w)</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;        {</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;        }</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;        <span class="keyword">inline</span> <span class="keyword">explicit</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>( <span class="keyword">const</span> <span class="keywordtype">float</span> arr[4] )</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;            : x( arr[0] ),</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;              y( arr[1] ),</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;              z( arr[2] ),</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;              w( arr[3] )</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;        {</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        }</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        <span class="keyword">inline</span> <span class="keyword">explicit</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>( <span class="keyword">const</span> <span class="keywordtype">int</span> arr[4] )</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;        {</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;            x = (float)arr[0];</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;            y = (float)arr[1];</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;            z = (float)arr[2];</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;            w = (float)arr[3];</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        }</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        <span class="keyword">inline</span> <span class="keyword">explicit</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>( <span class="keywordtype">float</span>* <span class="keyword">const</span> arr )</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;            : x( arr[0] ), y( arr[1] ), z( arr[2] ), w( arr[3] )</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        {</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        }</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="class_t3_d_1_1_vector4.html#af2556c6c4898e7adc59a44c1d88c5713">   62</a></span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="class_t3_d_1_1_vector4.html#af2556c6c4898e7adc59a44c1d88c5713">swap</a>(<a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>&amp; other)</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        {</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;            std::swap(x, other.x);</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;            std::swap(y, other.y);</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;            std::swap(z, other.z);</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;            std::swap(w, other.w);</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        }</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    </div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">float</span> operator [] ( <span class="keyword">const</span> <span class="keywordtype">int</span> i )<span class="keyword"> const</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;            assert( i &lt; 4 );</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;            <span class="keywordflow">return</span> *(&amp;x+i);</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        }</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">float</span>&amp; operator [] ( <span class="keyword">const</span> <span class="keywordtype">int</span> i )</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        {</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;            assert( i &lt; 4 );</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;            <span class="keywordflow">return</span> *(&amp;x+i);</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        }</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="class_t3_d_1_1_vector4.html#a84492ecab389eb79058c5b0f74cf3890">   85</a></span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">float</span>* <a class="code" href="class_t3_d_1_1_vector4.html#a84492ecab389eb79058c5b0f74cf3890">ptr</a>()</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;        {</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;            <span class="keywordflow">return</span> &amp;x;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        }</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        <span class="comment">/*inline const float* ptr() const</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment">        {</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="comment">            return &amp;x;</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="comment">        }*/</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="class_t3_d_1_1_vector4.html#ac26412d6ff3c7c7ded6bd581fde28fc8">   99</a></span>&#160;        <span class="keyword">inline</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>&amp; <a class="code" href="class_t3_d_1_1_vector4.html#ac26412d6ff3c7c7ded6bd581fde28fc8">operator = </a>( <span class="keyword">const</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>&amp; other )</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        {</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;            x = other.x;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;            y = other.y;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;            z = other.z;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;            w = other.w;</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        }</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        <span class="keyword">inline</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>&amp; <a class="code" href="class_t3_d_1_1_vector4.html#ac26412d6ff3c7c7ded6bd581fde28fc8">operator = </a>( <span class="keyword">const</span> <span class="keywordtype">float</span> s)</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;        {</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;            x = s;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;            y = s;</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;            z = s;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;            w = s;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        }</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">bool</span> operator == ( <span class="keyword">const</span> Vector4&amp; other )<span class="keyword"> const</span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            <span class="keywordflow">return</span> ( x == other.x &amp;&amp;</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;                y == other.y &amp;&amp;</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;                z == other.z &amp;&amp;</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;                w == other.w );</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        }</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">bool</span> operator != ( <span class="keyword">const</span> Vector4&amp; other )<span class="keyword"> const</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;            <span class="keywordflow">return</span> ( x != other.x ||</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;                y != other.y ||</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;                z != other.z ||</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;                w != other.w );</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;        }</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        <span class="keyword">inline</span> Vector4&amp; <a class="code" href="class_t3_d_1_1_vector4.html#ac26412d6ff3c7c7ded6bd581fde28fc8">operator = </a>(<span class="keyword">const</span> Vector3&amp; other)</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        {</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;            x = other.x;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;            y = other.y;</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;            z = other.z;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;            w = 1.0f;</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        }</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        <span class="comment">// arithmetic operations</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;        <span class="keyword">inline</span> Vector4 operator + ( <span class="keyword">const</span> Vector4&amp; other )<span class="keyword"> const</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;            <span class="keywordflow">return</span> Vector4(</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;                x + other.x,</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;                y + other.y,</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;                z + other.z,</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;                w + other.w);</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        }</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;        <span class="keyword">inline</span> Vector4 operator - ( <span class="keyword">const</span> Vector4&amp; other )<span class="keyword"> const</span></div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;            <span class="keywordflow">return</span> Vector4(</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;                x - other.x,</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                y - other.y,</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                z - other.z,</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                w - other.w);</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;        }</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        <span class="keyword">inline</span> Vector4 operator * ( <span class="keyword">const</span> <span class="keywordtype">float</span> s )<span class="keyword"> const</span></div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;            <span class="keywordflow">return</span> Vector4(</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;                x * s,</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;                y * s,</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;                z * s,</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;                w * s);</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        }</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        <span class="keyword">inline</span> Vector4 operator / ( <span class="keyword">const</span> <span class="keywordtype">float</span> s )<span class="keyword"> const</span></div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;            assert( s != 0.0 );</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;            <span class="keywordtype">float</span> inv = 1.0f / s;</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;            <span class="keywordflow">return</span> Vector4(</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;                x * inv,</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;                y * inv,</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;                z * inv,</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;                w * inv);</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        }  </div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        <span class="keyword">inline</span> <span class="keyword">const</span> Vector4&amp; operator + ()<span class="keyword"> const</span></div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        }</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        <span class="keyword">inline</span> Vector4 operator - ()<span class="keyword"> const</span></div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;            <span class="keywordflow">return</span> Vector4(-x, -y, -z, -w);</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        }</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;        <span class="keyword">inline</span> <span class="keyword">friend</span> Vector4 operator * ( <span class="keyword">const</span> <span class="keywordtype">float</span> s, <span class="keyword">const</span> Vector4&amp; v )</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;        {</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;            <span class="keywordflow">return</span> Vector4(</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;                s * v.x,</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                s * v.y,</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                s * v.z,</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;                s * v.w);</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        }</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;        <span class="keyword">inline</span> <span class="keyword">friend</span> Vector4 operator / ( <span class="keyword">const</span> <span class="keywordtype">float</span> s, <span class="keyword">const</span> Vector4&amp; v )</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;        {</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;            <span class="keywordflow">return</span> Vector4(</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                s / v.x,</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;                s / v.y,</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;                s / v.z,</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;                s / v.w);</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        }</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;        <span class="comment">// arithmetic updates</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;        <span class="keyword">inline</span> Vector4&amp; operator += ( <span class="keyword">const</span> Vector4&amp; other )</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;        {</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;            x += other.x;</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;            y += other.y;</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;            z += other.z;</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;            w += other.w;</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;        }</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;        <span class="keyword">inline</span> Vector4&amp; operator -= ( <span class="keyword">const</span> Vector4&amp; other )</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        {</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            x -= other.x;</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;            y -= other.y;</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;            z -= other.z;</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;            w -= other.w;</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;        }</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;        <span class="keyword">inline</span> Vector4&amp; operator *= ( <span class="keyword">const</span> <span class="keywordtype">float</span> s )</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;        {</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;            x *= s;</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;            y *= s;</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;            z *= s;</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;            w *= s;</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        }</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        <span class="keyword">inline</span> Vector4&amp; operator /= ( <span class="keyword">const</span> <span class="keywordtype">float</span> s )</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;        {</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;            assert( s != 0.0 );</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;            <span class="keywordtype">float</span> inv = 1.0f / s;</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;            x *= inv;</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;            y *= inv;</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;            z *= inv;</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;            w *= inv;</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;        }</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;</div>
<div class="line"><a name="l00263"></a><span class="lineno"><a class="line" href="class_t3_d_1_1_vector4.html#a58a8cdbebfd3a48ad417c19ae2549e6b">  263</a></span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">float</span> <a class="code" href="class_t3_d_1_1_vector4.html#a58a8cdbebfd3a48ad417c19ae2549e6b">dot</a>(<span class="keyword">const</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>&amp; other)<span class="keyword"> const</span></div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;<span class="keyword">        </span>{</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;            <span class="keywordflow">return</span> x * other.x + y * other.y + z * other.z + w * other.w;</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;        }</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;        <span class="keyword">inline</span> <span class="keyword">friend</span> std::ostream&amp; <span class="keyword">operator</span> &lt;&lt;</div>
<div class="line"><a name="l00271"></a><span class="lineno"><a class="line" href="class_t3_d_1_1_vector4.html#a857adf61f9822452c3560ffc7be46c65">  271</a></span>&#160;            ( std::ostream&amp; o, <span class="keyword">const</span> <a class="code" href="class_t3_d_1_1_vector4.html">Vector4</a>&amp; v )</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;        {</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;            o &lt;&lt; <span class="stringliteral">&quot;Vector4(&quot;</span> &lt;&lt; v.x &lt;&lt; <span class="stringliteral">&quot;, &quot;</span> &lt;&lt; v.y &lt;&lt; <span class="stringliteral">&quot;, &quot;</span> &lt;&lt; v.z &lt;&lt; <span class="stringliteral">&quot;, &quot;</span> &lt;&lt; v.w &lt;&lt; <span class="stringliteral">&quot;)&quot;</span>;</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;            <span class="keywordflow">return</span> o;</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;        }</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    };</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;}</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="class_t3_d_1_1_vector4_html"><div class="ttname"><a href="class_t3_d_1_1_vector4.html">T3D::Vector4</a></div><div class="ttdef"><b>Definition:</b> Vector4.h:24</div></div>
<div class="ttc" id="class_t3_d_1_1_vector4_html_af2556c6c4898e7adc59a44c1d88c5713"><div class="ttname"><a href="class_t3_d_1_1_vector4.html#af2556c6c4898e7adc59a44c1d88c5713">T3D::Vector4::swap</a></div><div class="ttdeci">void swap(Vector4 &amp;other)</div><div class="ttdef"><b>Definition:</b> Vector4.h:62</div></div>
<div class="ttc" id="class_t3_d_1_1_vector4_html_a84492ecab389eb79058c5b0f74cf3890"><div class="ttname"><a href="class_t3_d_1_1_vector4.html#a84492ecab389eb79058c5b0f74cf3890">T3D::Vector4::ptr</a></div><div class="ttdeci">float * ptr()</div><div class="ttdoc">Pointer accessor for direct copying. </div><div class="ttdef"><b>Definition:</b> Vector4.h:85</div></div>
<div class="ttc" id="class_t3_d_1_1_vector4_html_ac26412d6ff3c7c7ded6bd581fde28fc8"><div class="ttname"><a href="class_t3_d_1_1_vector4.html#ac26412d6ff3c7c7ded6bd581fde28fc8">T3D::Vector4::operator=</a></div><div class="ttdeci">Vector4 &amp; operator=(const Vector4 &amp;other)</div><div class="ttdoc">Pointer accessor for direct copying. </div><div class="ttdef"><b>Definition:</b> Vector4.h:99</div></div>
<div class="ttc" id="class_t3_d_1_1_vector4_html_a58a8cdbebfd3a48ad417c19ae2549e6b"><div class="ttname"><a href="class_t3_d_1_1_vector4.html#a58a8cdbebfd3a48ad417c19ae2549e6b">T3D::Vector4::dot</a></div><div class="ttdeci">float dot(const Vector4 &amp;other) const </div><div class="ttdef"><b>Definition:</b> Vector4.h:263</div></div>
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